20 sparrows were resting on 2 lamp posts. 4 sparrows flew from the 1st to the 2nd lamp posts. 2 sparrows flew from the 2nd lamp post to the 1st lamp post. The number of sparrows on each lamp post then became the same. How many sparrows were at each lamp post at first? 

Heather spent 4 dollars on a story book. She used half of the remaining money to buy 6 apples. She was left with 4 dollars after buying a hair clip that cost 2 dollars. How much did Heather have at first? 

Tara went up 4 floors from her place to collect some flowers from her auntie. She then went down 6 floors to pass the flowers to her friend. Finally, she went up 3 floors to another friend’s place on the 9th floor to visit her. On which floor was Tara staying? 

Work backwards to find out the value A, B and C  

A number is first subtracted by 8. The difference is then multiplied by 8. The product is then divided by 8. The final result is still 8. What is the number? 

A ribbon is cut in half. Each half is then cut in half again. The smallest piece of ribbon measures 30 cm. How long is the ribbon at first?

Matthew spent 5 dollars on a storybook. He spent half of his remaining money on a toy. He was left with 3 dollars after buying some marbles that cost 4 dollars. How much did he have at first? 

Shane read 10 pages more than  half of a storybook on the first day. He read 10 pages more than half of the remaining pages on the second day. He had 20 pages more to go. How many pages had the storybook? 

Darrell spent half of his money on a dictionary. He spent half of the remaining  money on some storybook. After spending 6 dollars on a fast food meal, he was left with 10 dollars. How much did Darrell have at first? 

There are a total of 420 books on the first and second shelves of a bookcase respectively. 60 books from the first shelf are transferred to the second one. 80 books are rearranged from the second shelf to the first one. The number of books on the two shelves become the same. How many books are on each shelf of bookcase at first? MÃ30494

63 sparrows were perching on two trees altogether. 16 sparrows from the first tree flew to the second one. 24 sparrows flew from the second tree to the first tree. The number of sparrows on the first tree became twice as many as those on the second tree. How many sparrows were perching on each tree at first? 

There are a total of 210 cars in car parks A and B. 36 cars from car park A were driven to car park B. 45 cars from car park B were driven back to car park A.The number of  car in car park A then became twice the number of cars in car park B. How many cars were in car park A at first?

Mark had a bag of sweets. He gave 4 sweets to Alison, 8 sweets to his cousin and ate half of the remaining sweets. He was then left with 10 sweets. How many sweets did Mark have at first?

Ashley had a basket of apples. She took an apple in the morning. Her family took half of the remaining after dinner. She took another apple the next morning. Her family took half of the remaining after dinner. There were 2 apples left in the basket. How many apples were in the basket at first? 

Sopia went up 4 floors from her place to bring a cake to her cousin. She then went down 6 floors to return a sum of money to her friend. Finally, she went up 5 floors to another friend’s place on the 10th floor to discuss a science project. On which floor was Sophia’s place?